maybeRead in base

This is part of why I'm not a fan of (.:) in the first place, but trying to generalize through Category doesn't offer anything here.
Sent from my iPad
On Aug 16, 2012, at 7:16 AM, Twan van Laarhoven <twanvl at gmail.com> wrote:
> On 15/08/12 19:02, Edward Kmett wrote:
>> I'm not a huge fan of (.:), but you insist on adding it, please generalize it to
>> fmap.fmap.
>>>> (.:) :: (Functor f, Functor g) => (a -> b) -> f (g a) -> f (g b)
>>>> This subsumes the other use case.
>> For the love of Categories, please don't go down this road. fmap is not the proper generalization of (.).
>>> Twan
>>> _______________________________________________
> Libraries mailing list
>Libraries at haskell.org>http://www.haskell.org/mailman/listinfo/libraries